Car Dies

[Stl-986]

I was reading through this from the beginning. Correct me if this is wrong.

Car idles badly. Will drop low when coming to a stop, sometimes dies
Dealer said no codes found but suggest maf, injectors, coils
Another shop said it is misfiring

How did the 2nd shop see it was misfiring?

[gabedrummin]

After I changed out the coils I scanned the car with my (Durametric) software .I selected all the cylinders and cylinder 4 started counting ,so I figured out cylinder 4 is misfiring .When the car was at the Porsche dealer they said my car is not throwing any codes so they recommended trying to replace to mass air flow sensor 904 dollars . After that they said my car is showing multiple miss fires on several cylinders .I need to replace all my coils because they were aftermarket .Replace my injectors and plugs .To get the car running right. This did not make sense so I picked up the car .They had it 4 weeks and never mentioned any codes till after I ok-ed the mass air flow . And now they want 2200 more . I don't trust them .I have had my car to 5 different indi around the the spring Texas area no one lives to to the expectation .I guess I could disconnect the front mount and let the front of the motor hang down a bit ? It might give me enough room to remove the injectors ? I don't know. I spend way more time working on this car than driving it. I can understand why one would want to push his car off a cliff . I have had to replace the steering rack twice the axle brake master cylinder clutch , clutch slave brake rotors twice . The suspension has been changed to coil overs .All coffin arms a Motor head lights changed to Litronics a horn radiator fans ignition switch steering lock The seats have been redone new sifter new starter new glass window top new radio .wheel bearing .So much stuff I sure I missed something .I have to much money in her to give up now.Oh yea had to replace the heads on a 3 year old RND engine .That now need to be replaced again . Thank you all